package main

//1,1,2,3,5,8,13,21,34,55
func f(n int) int {
	if n==1||n==2{
		return 1
	}
	x1,x2:=1,1
	t:=0
	for i:=3;i<=n;i++ {
		t=x2
		x2=x1+x2
		x1=t
	}
	return x2
}

type Status uint
const (
	_ Status =iota
	Online=1
	Offline=2
)

func main() {


}

func getStatus() Status {
	return Online
}